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                    U.S. DEPARTMENT OF AGRICULTURE
 Hydrology and Remote Sensing Laboratory: Beltsville, MD
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- South Fork Experimental Watershed

South Fork Experimental Watershedheadline bar   **The South Fork Watershed of the Iowa River**is the United States site for the
            Joint Experiment for Crop Assessment and Monitoring (JECAM). The goal of JECAM is to develop
            international standards and a "global system of systems" for agricultural research by sharing
            data, methods, and results from different cropping systems throughout the world.  Read more at
            jecam.org. The South Fork Watershed is situated in a four-county area in Iowa which is dominated by a
            corn-soybean crop rotation. Ongoing scientific investigations include measuring the impact of conservation
            practices on water quality, modeling the watershed using the Soil Water Assessment Tool (SWAT), collecting
            calibration/validation data for large-scale surface soil moisture remote sensing products, and evaluating
            water/energy/CO2 land surface flux models. The South Fork experimental watershed participated in the
            IFloodS experiment which 
            studied precipitation estimation using high resolution radar.  This was a preparatory experiment for the
            Global Precipitation Measurement (GPM) mission.  The network
            also provides validation data for the Soil Moisture
            Active Passive (SMAP) mission which launched on January 31, 2015. *Explore maps and data for the South Fork Watershed by accessing the Interactive Data Interface:* The Hydrology map shows the locations of 20 soil moisture monitoring stations, overlaying 86 
				watershed subbasins with localized precipitation estimates.
                The Crops map contains 13 years of land cover classification data and a slider to switch between them. Interactive Data Interface


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